

<script src="js/jquery-3.3.1.js"></script>
<script src="js/bootstrap.min.js"></script>
<link rel="stylesheet" href="css/bootstrap.min.css">
<header id="header">
    
    <nav class="navbar navbar-default" role="navigation">
        <div class="container-fluid"> 
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse"
                    data-target="#example-navbar-collapse">
                <span class="sr-only">切换导航</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">火车订票系统</a>
        </div>
        <div class="collapse navbar-collapse" id="example-navbar-collapse">
            <ul class="nav navbar-nav">
                <!-- class = active 是说明被选中了 -->
                
                <li><a href="booking.html">首页</a></li>
                <li><a href="#" onclick="alert('当前功能还未开发')">车票</a></li>
                <li><a href="#" onclick="alert('当前功能还未开发')">出行指南</a></li>
                <li><a href="#" onclick="alert('当前功能还未开发')">信息查询</a></li>
                <li><a href="#" onclick="alert('当前功能还未开发')">商旅服务</a></li>
                <li><a href="#" onclick="alert('当前功能还未开发')">线上订餐</a></li>
                <li><a href="orderList.html">个人信息</a></li> 
                <li><a href="login.html">注销</a></li>
            </ul>
        </div>
        </div>
    </nav>
</header>
<script>

</script>


